Cited by 54DNA Repair MechanismsNuclear Structure and FunctionEffects of Radiation Exposure

Lamin B1 sequesters 53BP1 to control its recruitment to DNA damage

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Etourneaud, Laure, Moussa, Angela, Rass, Emilie, Genet, Diane, Willaume, Simon, Chabance-Okumura, Caroline, Wanschoor, Paul, Picotto, Julien +14 more·2021·Science Advances

Abstract

Double-strand breaks (DSBs) are harmful lesions and a major cause of genome instability. Studies have suggested a link between the nuclear envelope and the DNA damage response. Here, we show that lamin B1, a major component of the nuclear envelope, interacts directly with 53BP1 protein, which plays a pivotal role in the DSB repair. This interaction is dissociated after DNA damage. Lamin B1 overexpression impedes 53BP1 recruitment to DNA damage sites and leads to a persistence of DNA damage, a defect in nonhomologous end joining and an increased sensitivity to DSBs. The identification of interactions domains between lamin B1 and 53BP1 allows us to demonstrate that the defect of 53BP1 recruitment and the DSB persistence upon lamin B1 overexpression are due to sequestration of 53BP1 by lamin B1. This study highlights lamin B1 as a factor controlling the recruitment of 53BP1 to DNA damage sites upon injury.

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Authors
Etourneaud, L., Moussa, A., Rass, E., Genet, D., Willaume, S., Chabance-Okumura, C., Wanschoor, P., Picotto, J., Thézé, B., Dépagne, J., Veaute, X., Dizet, E., Busso, D., Barascu, A., Irbah, L., Kortulewski, T., Campalans, A., Le Chalony, C., Zinn-Justin, S., Scully, R., Pennarun, G., & Bertrand, P.
Affiliations
  • Inserm (FR)
  • Université de Paris and Université Paris Saclay, INSERM, iRCM/IBFJ, CEA, UMR Stabilité Génétique, Cellules Souches et Radiations, F-92265 Fontenay-aux-Roses, France.
  • Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR)
  • Laboratory of Structural Biology and Radiobiology, Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Saclay, F-91190 Gif-sur-Yvette, France.
  • Beth Israel Deaconess Medical Center (US)
Corresponding author
  • Etourneaud, Laure
  • Moussa, Angela
  • Rass, Emilie
  • Genet, Diane
  • Bertrand, Pascale
Venue
Science Advances
Published
2021-08-27
Volume
7
Issue
35
ISSN
2375-2548 (ISSN-L)
OpenAlex
W3194798061
Cited by
54
References
76
Citations by year
2026: 9 · 2025: 17 · 2024: 7 · 2023: 13 · 2022: 7 · 2021: 1
FWCI
2.20
Type
journal article
Language
en
Open access
Locations
  • Science Advances (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
Funders
  • Louisville Institute
  • Fondation ARC pour la Recherche sur le Cancer (ARCPJA32020070002430)
  • Ligue Contre le Cancer (comité Ile de France)
  • INSERM (house funding- Unit SGCSR)
  • INCA
  • Fondation pour la Recherche Medicale
  • AT europe
  • Ligue Contre le Cancer fellowship
  • CEA Radiobiology segment grant
  • AFM-Téléton (n◦21566)
  • CEA Irtelis fellowship
  • Fondation ARC fellowship
  • CEA DRF “Phare” fellowship
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nuclear Structure and Function
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Effects of Radiation Exposure
Keywords
lamin B1, 53BP1, DNA damage response, DNA double-strand break repair, non-homologous end joining, nuclear envelope, protein-protein interaction, genomic instability, protein sequestration
MeSH terms
Tumor Suppressor p53-Binding Protein 1, DNA Damage, Lamin Type B, DNA Breaks, Double-Stranded, DNA End-Joining Repair

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